./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1252a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_e67f05e6-976a-42f8-8dc3-6c3d54e7b264/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_e67f05e6-976a-42f8-8dc3-6c3d54e7b264/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_e67f05e6-976a-42f8-8dc3-6c3d54e7b264/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_e67f05e6-976a-42f8-8dc3-6c3d54e7b264/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1252a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_e67f05e6-976a-42f8-8dc3-6c3d54e7b264/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_e67f05e6-976a-42f8-8dc3-6c3d54e7b264/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f441bd4a1f5705911b7315c074b39e665542818e ................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_e67f05e6-976a-42f8-8dc3-6c3d54e7b264/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_e67f05e6-976a-42f8-8dc3-6c3d54e7b264/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_e67f05e6-976a-42f8-8dc3-6c3d54e7b264/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_e67f05e6-976a-42f8-8dc3-6c3d54e7b264/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1252a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_e67f05e6-976a-42f8-8dc3-6c3d54e7b264/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_e67f05e6-976a-42f8-8dc3-6c3d54e7b264/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f441bd4a1f5705911b7315c074b39e665542818e ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-11-15 23:57:55,936 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 23:57:55,938 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 23:57:55,948 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 23:57:55,949 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 23:57:55,950 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 23:57:55,951 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 23:57:55,953 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 23:57:55,955 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 23:57:55,956 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 23:57:55,957 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 23:57:55,958 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 23:57:55,959 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 23:57:55,960 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 23:57:55,960 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 23:57:55,962 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 23:57:55,962 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 23:57:55,963 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 23:57:55,969 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 23:57:55,972 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 23:57:55,976 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 23:57:55,980 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 23:57:55,983 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 23:57:55,985 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 23:57:55,987 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 23:57:55,991 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 23:57:55,991 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 23:57:55,992 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 23:57:55,993 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 23:57:55,995 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 23:57:55,996 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 23:57:55,997 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 23:57:55,997 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 23:57:55,998 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 23:57:55,999 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 23:57:56,000 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 23:57:56,000 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 23:57:56,001 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 23:57:56,001 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 23:57:56,002 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 23:57:56,004 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 23:57:56,005 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_e67f05e6-976a-42f8-8dc3-6c3d54e7b264/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-15 23:57:56,026 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 23:57:56,026 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 23:57:56,027 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 23:57:56,027 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 23:57:56,028 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 23:57:56,028 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 23:57:56,028 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-15 23:57:56,029 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-15 23:57:56,029 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-15 23:57:56,029 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 23:57:56,029 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-15 23:57:56,030 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-15 23:57:56,030 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-15 23:57:56,030 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-15 23:57:56,030 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-15 23:57:56,031 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 23:57:56,031 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-15 23:57:56,031 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 23:57:56,032 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 23:57:56,032 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-15 23:57:56,032 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-15 23:57:56,033 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 23:57:56,033 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 23:57:56,033 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-15 23:57:56,033 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-15 23:57:56,034 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-15 23:57:56,034 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-15 23:57:56,034 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-15 23:57:56,034 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_e67f05e6-976a-42f8-8dc3-6c3d54e7b264/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f441bd4a1f5705911b7315c074b39e665542818e [2019-11-15 23:57:56,064 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 23:57:56,072 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 23:57:56,074 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 23:57:56,081 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 23:57:56,082 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 23:57:56,082 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_e67f05e6-976a-42f8-8dc3-6c3d54e7b264/bin/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_1252a.c [2019-11-15 23:57:56,137 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e67f05e6-976a-42f8-8dc3-6c3d54e7b264/bin/uautomizer/data/f20280634/2d8b83a3c4584a979479310eb1bd1d55/FLAG86f3259b9 [2019-11-15 23:57:56,567 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 23:57:56,571 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_e67f05e6-976a-42f8-8dc3-6c3d54e7b264/sv-benchmarks/c/float-newlib/float_req_bl_1252a.c [2019-11-15 23:57:56,577 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e67f05e6-976a-42f8-8dc3-6c3d54e7b264/bin/uautomizer/data/f20280634/2d8b83a3c4584a979479310eb1bd1d55/FLAG86f3259b9 [2019-11-15 23:57:56,589 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_e67f05e6-976a-42f8-8dc3-6c3d54e7b264/bin/uautomizer/data/f20280634/2d8b83a3c4584a979479310eb1bd1d55 [2019-11-15 23:57:56,592 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 23:57:56,593 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-15 23:57:56,594 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 23:57:56,594 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 23:57:56,597 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 23:57:56,598 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 11:57:56" (1/1) ... [2019-11-15 23:57:56,600 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13df5138 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:57:56, skipping insertion in model container [2019-11-15 23:57:56,601 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 11:57:56" (1/1) ... [2019-11-15 23:57:56,607 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 23:57:56,623 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 23:57:56,891 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 23:57:56,896 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 23:57:56,939 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 23:57:56,965 INFO L192 MainTranslator]: Completed translation [2019-11-15 23:57:56,965 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:57:56 WrapperNode [2019-11-15 23:57:56,966 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 23:57:56,966 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-15 23:57:56,966 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-15 23:57:56,967 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-15 23:57:56,975 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:57:56" (1/1) ... [2019-11-15 23:57:56,984 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:57:56" (1/1) ... [2019-11-15 23:57:57,009 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-15 23:57:57,011 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 23:57:57,012 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 23:57:57,012 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 23:57:57,021 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:57:56" (1/1) ... [2019-11-15 23:57:57,022 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:57:56" (1/1) ... [2019-11-15 23:57:57,028 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:57:56" (1/1) ... [2019-11-15 23:57:57,028 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:57:56" (1/1) ... [2019-11-15 23:57:57,047 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:57:56" (1/1) ... [2019-11-15 23:57:57,059 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:57:56" (1/1) ... [2019-11-15 23:57:57,061 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:57:56" (1/1) ... [2019-11-15 23:57:57,069 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 23:57:57,073 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 23:57:57,073 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 23:57:57,073 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 23:57:57,074 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:57:56" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e67f05e6-976a-42f8-8dc3-6c3d54e7b264/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 23:57:57,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-11-15 23:57:57,143 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 23:57:57,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 23:57:57,143 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-15 23:57:57,144 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-15 23:57:57,144 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-15 23:57:57,483 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 23:57:57,483 INFO L284 CfgBuilder]: Removed 18 assume(true) statements. [2019-11-15 23:57:57,484 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:57:57 BoogieIcfgContainer [2019-11-15 23:57:57,484 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 23:57:57,485 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-15 23:57:57,486 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-15 23:57:57,488 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-15 23:57:57,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.11 11:57:56" (1/3) ... [2019-11-15 23:57:57,490 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ff21ec6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 11:57:57, skipping insertion in model container [2019-11-15 23:57:57,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:57:56" (2/3) ... [2019-11-15 23:57:57,490 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ff21ec6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 11:57:57, skipping insertion in model container [2019-11-15 23:57:57,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:57:57" (3/3) ... [2019-11-15 23:57:57,492 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1252a.c [2019-11-15 23:57:57,501 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-15 23:57:57,508 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-15 23:57:57,516 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-15 23:57:57,536 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-15 23:57:57,537 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-15 23:57:57,537 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-15 23:57:57,537 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 23:57:57,537 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 23:57:57,537 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-15 23:57:57,538 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 23:57:57,538 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-15 23:57:57,551 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2019-11-15 23:57:57,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-15 23:57:57,557 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:57:57,558 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:57:57,560 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:57:57,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:57:57,565 INFO L82 PathProgramCache]: Analyzing trace with hash -958075201, now seen corresponding path program 1 times [2019-11-15 23:57:57,572 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:57:57,573 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452167642] [2019-11-15 23:57:57,574 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:57:57,574 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:57:57,574 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:57:57,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:57:57,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:57:57,662 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452167642] [2019-11-15 23:57:57,663 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:57:57,663 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-15 23:57:57,663 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144838746] [2019-11-15 23:57:57,667 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-15 23:57:57,667 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:57:57,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-15 23:57:57,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-15 23:57:57,680 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2019-11-15 23:57:57,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:57:57,695 INFO L93 Difference]: Finished difference Result 62 states and 98 transitions. [2019-11-15 23:57:57,695 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-15 23:57:57,696 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-11-15 23:57:57,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:57:57,705 INFO L225 Difference]: With dead ends: 62 [2019-11-15 23:57:57,706 INFO L226 Difference]: Without dead ends: 29 [2019-11-15 23:57:57,708 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-15 23:57:57,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-11-15 23:57:57,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-11-15 23:57:57,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-11-15 23:57:57,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2019-11-15 23:57:57,741 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 10 [2019-11-15 23:57:57,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:57:57,741 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2019-11-15 23:57:57,741 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-15 23:57:57,742 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2019-11-15 23:57:57,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-15 23:57:57,742 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:57:57,742 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:57:57,743 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:57:57,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:57:57,743 INFO L82 PathProgramCache]: Analyzing trace with hash 1001584898, now seen corresponding path program 1 times [2019-11-15 23:57:57,743 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:57:57,744 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737938831] [2019-11-15 23:57:57,744 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:57:57,744 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:57:57,744 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:57:57,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:57:57,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:57:57,807 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737938831] [2019-11-15 23:57:57,807 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:57:57,807 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-15 23:57:57,808 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545706111] [2019-11-15 23:57:57,809 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-15 23:57:57,809 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:57:57,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-15 23:57:57,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-15 23:57:57,809 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand 4 states. [2019-11-15 23:57:57,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:57:57,887 INFO L93 Difference]: Finished difference Result 53 states and 67 transitions. [2019-11-15 23:57:57,889 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-15 23:57:57,889 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-11-15 23:57:57,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:57:57,891 INFO L225 Difference]: With dead ends: 53 [2019-11-15 23:57:57,891 INFO L226 Difference]: Without dead ends: 44 [2019-11-15 23:57:57,892 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-15 23:57:57,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2019-11-15 23:57:57,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 31. [2019-11-15 23:57:57,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-15 23:57:57,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2019-11-15 23:57:57,898 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2019-11-15 23:57:57,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:57:57,899 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2019-11-15 23:57:57,899 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-15 23:57:57,899 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2019-11-15 23:57:57,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-15 23:57:57,900 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:57:57,900 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:57:57,900 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:57:57,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:57:57,900 INFO L82 PathProgramCache]: Analyzing trace with hash -555760345, now seen corresponding path program 1 times [2019-11-15 23:57:57,901 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:57:57,901 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961533741] [2019-11-15 23:57:57,901 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:57:57,901 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:57:57,901 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:57:57,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:57:57,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:57:57,984 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961533741] [2019-11-15 23:57:57,984 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:57:57,985 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-15 23:57:57,985 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955463591] [2019-11-15 23:57:57,985 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-15 23:57:57,985 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:57:57,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-15 23:57:57,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-15 23:57:57,986 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 4 states. [2019-11-15 23:57:58,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:57:58,034 INFO L93 Difference]: Finished difference Result 55 states and 69 transitions. [2019-11-15 23:57:58,034 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-15 23:57:58,034 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-11-15 23:57:58,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:57:58,035 INFO L225 Difference]: With dead ends: 55 [2019-11-15 23:57:58,035 INFO L226 Difference]: Without dead ends: 46 [2019-11-15 23:57:58,036 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-15 23:57:58,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2019-11-15 23:57:58,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 31. [2019-11-15 23:57:58,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-15 23:57:58,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2019-11-15 23:57:58,041 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 14 [2019-11-15 23:57:58,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:57:58,042 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2019-11-15 23:57:58,042 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-15 23:57:58,042 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2019-11-15 23:57:58,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-15 23:57:58,043 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:57:58,043 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:57:58,043 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:57:58,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:57:58,044 INFO L82 PathProgramCache]: Analyzing trace with hash 1219247017, now seen corresponding path program 1 times [2019-11-15 23:57:58,044 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:57:58,044 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281502029] [2019-11-15 23:57:58,044 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:57:58,045 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:57:58,045 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:57:58,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:57:58,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:57:58,102 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 23:57:58,103 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-11-15 23:57:58,129 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.11 11:57:58 BoogieIcfgContainer [2019-11-15 23:57:58,130 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-15 23:57:58,130 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-15 23:57:58,130 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-15 23:57:58,130 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-15 23:57:58,131 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:57:57" (3/4) ... [2019-11-15 23:57:58,134 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-15 23:57:58,134 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-15 23:57:58,136 INFO L168 Benchmark]: Toolchain (without parser) took 1542.74 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.6 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -115.5 MB). Peak memory consumption was 27.2 MB. Max. memory is 11.5 GB. [2019-11-15 23:57:58,137 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 23:57:58,138 INFO L168 Benchmark]: CACSL2BoogieTranslator took 372.05 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.6 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -192.9 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. [2019-11-15 23:57:58,138 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.98 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-15 23:57:58,139 INFO L168 Benchmark]: Boogie Preprocessor took 60.95 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 23:57:58,139 INFO L168 Benchmark]: RCFGBuilder took 411.64 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 23.7 MB). Peak memory consumption was 23.7 MB. Max. memory is 11.5 GB. [2019-11-15 23:57:58,140 INFO L168 Benchmark]: TraceAbstraction took 644.36 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 48.3 MB). Peak memory consumption was 48.3 MB. Max. memory is 11.5 GB. [2019-11-15 23:57:58,140 INFO L168 Benchmark]: Witness Printer took 4.38 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 23:57:58,143 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 372.05 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.6 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -192.9 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 44.98 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 60.95 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 411.64 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 23.7 MB). Peak memory consumption was 23.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 644.36 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 48.3 MB). Peak memory consumption was 48.3 MB. Max. memory is 11.5 GB. * Witness Printer took 4.38 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 79]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 78, overapproximation of someUnaryFLOAToperation at line 72. Possible FailurePath: [L72] float x = -0.0f; [L73] float y = 0.0f; [L20] __uint32_t w; [L23] ieee_float_shape_type gf_u; [L24] gf_u.value = (x) [L25] EXPR gf_u.word [L25] (w) = gf_u.word [L28] COND FALSE !(w == 0x00000000 || w == 0x80000000) [L30-L31] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) [L33-L34] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) [L36] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L39] return 0; [L43] COND TRUE __fpclassify_float(x) == 0 [L44] return y; [L75] float res = fmax_float(x, y); [L78] EXPR res == 0.0f && __signbit_float(res) == 0 [L78] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L79] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.5s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 135 SDtfs, 32 SDslu, 140 SDs, 0 SdLazy, 30 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 28 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 49 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 442 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-cad4683 [2019-11-15 23:58:00,393 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 23:58:00,395 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 23:58:00,408 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 23:58:00,408 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 23:58:00,409 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 23:58:00,410 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 23:58:00,412 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 23:58:00,414 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 23:58:00,415 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 23:58:00,415 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 23:58:00,416 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 23:58:00,417 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 23:58:00,418 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 23:58:00,418 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 23:58:00,419 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 23:58:00,420 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 23:58:00,421 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 23:58:00,423 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 23:58:00,425 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 23:58:00,427 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 23:58:00,428 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 23:58:00,429 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 23:58:00,430 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 23:58:00,432 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 23:58:00,433 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 23:58:00,433 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 23:58:00,434 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 23:58:00,434 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 23:58:00,435 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 23:58:00,435 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 23:58:00,436 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 23:58:00,437 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 23:58:00,437 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 23:58:00,438 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 23:58:00,438 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 23:58:00,439 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 23:58:00,439 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 23:58:00,439 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 23:58:00,440 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 23:58:00,441 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 23:58:00,441 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_e67f05e6-976a-42f8-8dc3-6c3d54e7b264/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-15 23:58:00,455 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 23:58:00,455 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 23:58:00,456 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 23:58:00,456 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 23:58:00,457 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 23:58:00,457 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 23:58:00,457 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-15 23:58:00,457 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-15 23:58:00,457 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 23:58:00,458 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-15 23:58:00,458 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-15 23:58:00,458 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-15 23:58:00,458 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-15 23:58:00,458 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-15 23:58:00,458 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-15 23:58:00,459 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-15 23:58:00,459 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 23:58:00,459 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-15 23:58:00,459 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 23:58:00,459 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 23:58:00,460 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-15 23:58:00,460 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-15 23:58:00,460 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 23:58:00,460 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 23:58:00,460 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-15 23:58:00,461 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-15 23:58:00,461 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-15 23:58:00,461 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-15 23:58:00,461 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-15 23:58:00,461 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-15 23:58:00,462 INFO L138 SettingsManager]: * Logic for external solver=AUFBV Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_e67f05e6-976a-42f8-8dc3-6c3d54e7b264/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f441bd4a1f5705911b7315c074b39e665542818e [2019-11-15 23:58:00,498 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 23:58:00,508 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 23:58:00,511 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 23:58:00,512 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 23:58:00,513 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 23:58:00,513 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_e67f05e6-976a-42f8-8dc3-6c3d54e7b264/bin/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_1252a.c [2019-11-15 23:58:00,563 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e67f05e6-976a-42f8-8dc3-6c3d54e7b264/bin/uautomizer/data/49496bf39/97cd6c8d6bc94849924b5a59c202af8a/FLAG418e31170 [2019-11-15 23:58:00,996 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 23:58:00,997 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_e67f05e6-976a-42f8-8dc3-6c3d54e7b264/sv-benchmarks/c/float-newlib/float_req_bl_1252a.c [2019-11-15 23:58:01,003 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e67f05e6-976a-42f8-8dc3-6c3d54e7b264/bin/uautomizer/data/49496bf39/97cd6c8d6bc94849924b5a59c202af8a/FLAG418e31170 [2019-11-15 23:58:01,019 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_e67f05e6-976a-42f8-8dc3-6c3d54e7b264/bin/uautomizer/data/49496bf39/97cd6c8d6bc94849924b5a59c202af8a [2019-11-15 23:58:01,023 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 23:58:01,025 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-15 23:58:01,028 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 23:58:01,028 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 23:58:01,031 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 23:58:01,032 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 11:58:01" (1/1) ... [2019-11-15 23:58:01,034 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@543d201a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:58:01, skipping insertion in model container [2019-11-15 23:58:01,043 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 11:58:01" (1/1) ... [2019-11-15 23:58:01,050 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 23:58:01,072 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 23:58:01,273 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 23:58:01,279 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 23:58:01,307 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 23:58:01,385 INFO L192 MainTranslator]: Completed translation [2019-11-15 23:58:01,385 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:58:01 WrapperNode [2019-11-15 23:58:01,386 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 23:58:01,386 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-15 23:58:01,386 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-15 23:58:01,387 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-15 23:58:01,394 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:58:01" (1/1) ... [2019-11-15 23:58:01,416 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:58:01" (1/1) ... [2019-11-15 23:58:01,436 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-15 23:58:01,437 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 23:58:01,437 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 23:58:01,437 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 23:58:01,445 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:58:01" (1/1) ... [2019-11-15 23:58:01,445 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:58:01" (1/1) ... [2019-11-15 23:58:01,449 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:58:01" (1/1) ... [2019-11-15 23:58:01,449 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:58:01" (1/1) ... [2019-11-15 23:58:01,458 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:58:01" (1/1) ... [2019-11-15 23:58:01,462 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:58:01" (1/1) ... [2019-11-15 23:58:01,465 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:58:01" (1/1) ... [2019-11-15 23:58:01,468 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 23:58:01,469 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 23:58:01,469 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 23:58:01,469 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 23:58:01,470 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:58:01" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e67f05e6-976a-42f8-8dc3-6c3d54e7b264/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 23:58:01,523 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-15 23:58:01,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 23:58:01,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 23:58:01,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2019-11-15 23:58:01,524 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-15 23:58:01,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-15 23:58:01,913 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 23:58:01,913 INFO L284 CfgBuilder]: Removed 18 assume(true) statements. [2019-11-15 23:58:01,914 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:58:01 BoogieIcfgContainer [2019-11-15 23:58:01,915 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 23:58:01,916 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-15 23:58:01,916 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-15 23:58:01,918 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-15 23:58:01,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.11 11:58:01" (1/3) ... [2019-11-15 23:58:01,919 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48571474 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 11:58:01, skipping insertion in model container [2019-11-15 23:58:01,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:58:01" (2/3) ... [2019-11-15 23:58:01,920 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48571474 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 11:58:01, skipping insertion in model container [2019-11-15 23:58:01,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:58:01" (3/3) ... [2019-11-15 23:58:01,921 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1252a.c [2019-11-15 23:58:01,930 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-15 23:58:01,937 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-15 23:58:01,946 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-15 23:58:01,966 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-15 23:58:01,966 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-15 23:58:01,966 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-15 23:58:01,966 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 23:58:01,966 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 23:58:01,967 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-15 23:58:01,967 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 23:58:01,967 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-15 23:58:01,978 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2019-11-15 23:58:01,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-15 23:58:01,985 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:58:01,985 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:58:01,987 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:58:01,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:58:01,992 INFO L82 PathProgramCache]: Analyzing trace with hash -958075201, now seen corresponding path program 1 times [2019-11-15 23:58:02,001 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 23:58:02,002 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1971101582] [2019-11-15 23:58:02,002 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e67f05e6-976a-42f8-8dc3-6c3d54e7b264/bin/uautomizer/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2019-11-15 23:58:02,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:58:02,082 INFO L256 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 1 conjunts are in the unsatisfiable core [2019-11-15 23:58:02,087 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:58:02,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:58:02,098 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 23:58:02,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:58:02,102 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1971101582] [2019-11-15 23:58:02,103 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:58:02,103 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-15 23:58:02,103 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294301779] [2019-11-15 23:58:02,106 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-15 23:58:02,106 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 23:58:02,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-15 23:58:02,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-15 23:58:02,117 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2019-11-15 23:58:02,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:58:02,132 INFO L93 Difference]: Finished difference Result 62 states and 98 transitions. [2019-11-15 23:58:02,132 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-15 23:58:02,133 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-11-15 23:58:02,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:58:02,141 INFO L225 Difference]: With dead ends: 62 [2019-11-15 23:58:02,141 INFO L226 Difference]: Without dead ends: 29 [2019-11-15 23:58:02,144 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-15 23:58:02,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-11-15 23:58:02,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-11-15 23:58:02,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-11-15 23:58:02,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2019-11-15 23:58:02,177 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 10 [2019-11-15 23:58:02,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:58:02,177 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2019-11-15 23:58:02,178 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-15 23:58:02,178 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2019-11-15 23:58:02,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-15 23:58:02,178 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:58:02,179 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:58:02,391 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-15 23:58:02,391 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:58:02,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:58:02,392 INFO L82 PathProgramCache]: Analyzing trace with hash 1001584898, now seen corresponding path program 1 times [2019-11-15 23:58:02,392 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 23:58:02,392 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [245185915] [2019-11-15 23:58:02,392 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e67f05e6-976a-42f8-8dc3-6c3d54e7b264/bin/uautomizer/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2019-11-15 23:58:02,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:58:02,447 INFO L256 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-15 23:58:02,448 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:58:02,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:58:02,475 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 23:58:02,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:58:02,503 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [245185915] [2019-11-15 23:58:02,503 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:58:02,504 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-15 23:58:02,504 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374500147] [2019-11-15 23:58:02,505 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-15 23:58:02,505 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 23:58:02,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-15 23:58:02,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-15 23:58:02,506 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand 6 states. [2019-11-15 23:58:02,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:58:02,615 INFO L93 Difference]: Finished difference Result 68 states and 85 transitions. [2019-11-15 23:58:02,616 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-15 23:58:02,616 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2019-11-15 23:58:02,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:58:02,617 INFO L225 Difference]: With dead ends: 68 [2019-11-15 23:58:02,618 INFO L226 Difference]: Without dead ends: 59 [2019-11-15 23:58:02,619 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-11-15 23:58:02,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2019-11-15 23:58:02,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 31. [2019-11-15 23:58:02,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-15 23:58:02,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2019-11-15 23:58:02,626 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2019-11-15 23:58:02,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:58:02,626 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2019-11-15 23:58:02,627 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-15 23:58:02,627 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2019-11-15 23:58:02,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-15 23:58:02,628 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:58:02,628 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:58:02,842 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-11-15 23:58:02,843 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:58:02,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:58:02,843 INFO L82 PathProgramCache]: Analyzing trace with hash 1219247017, now seen corresponding path program 1 times [2019-11-15 23:58:02,844 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 23:58:02,844 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1517031483] [2019-11-15 23:58:02,844 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e67f05e6-976a-42f8-8dc3-6c3d54e7b264/bin/uautomizer/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2019-11-15 23:58:02,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:58:02,910 INFO L256 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-15 23:58:02,913 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:58:02,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:58:02,943 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 23:58:02,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:58:02,976 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1517031483] [2019-11-15 23:58:02,976 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:58:02,977 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2019-11-15 23:58:02,977 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110737301] [2019-11-15 23:58:02,977 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-15 23:58:02,977 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 23:58:02,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-15 23:58:02,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-15 23:58:02,978 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 4 states. [2019-11-15 23:58:03,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:58:03,042 INFO L93 Difference]: Finished difference Result 52 states and 69 transitions. [2019-11-15 23:58:03,044 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-15 23:58:03,044 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-11-15 23:58:03,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:58:03,045 INFO L225 Difference]: With dead ends: 52 [2019-11-15 23:58:03,045 INFO L226 Difference]: Without dead ends: 26 [2019-11-15 23:58:03,046 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-15 23:58:03,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-11-15 23:58:03,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2019-11-15 23:58:03,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-11-15 23:58:03,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2019-11-15 23:58:03,050 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 14 [2019-11-15 23:58:03,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:58:03,050 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2019-11-15 23:58:03,050 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-15 23:58:03,051 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2019-11-15 23:58:03,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-15 23:58:03,051 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:58:03,052 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:58:03,259 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-11-15 23:58:03,260 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:58:03,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:58:03,260 INFO L82 PathProgramCache]: Analyzing trace with hash 1012446717, now seen corresponding path program 1 times [2019-11-15 23:58:03,261 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 23:58:03,261 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1873816022] [2019-11-15 23:58:03,261 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e67f05e6-976a-42f8-8dc3-6c3d54e7b264/bin/uautomizer/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2019-11-15 23:58:03,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:58:03,331 INFO L256 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-15 23:58:03,332 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:58:03,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:58:03,344 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 23:58:03,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:58:03,362 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1873816022] [2019-11-15 23:58:03,363 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:58:03,363 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-15 23:58:03,363 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894606985] [2019-11-15 23:58:03,363 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-15 23:58:03,363 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 23:58:03,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-15 23:58:03,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-15 23:58:03,364 INFO L87 Difference]: Start difference. First operand 26 states and 32 transitions. Second operand 6 states. [2019-11-15 23:58:03,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:58:03,436 INFO L93 Difference]: Finished difference Result 61 states and 71 transitions. [2019-11-15 23:58:03,436 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-15 23:58:03,436 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2019-11-15 23:58:03,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:58:03,438 INFO L225 Difference]: With dead ends: 61 [2019-11-15 23:58:03,438 INFO L226 Difference]: Without dead ends: 52 [2019-11-15 23:58:03,438 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-11-15 23:58:03,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2019-11-15 23:58:03,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 28. [2019-11-15 23:58:03,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-15 23:58:03,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2019-11-15 23:58:03,443 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 16 [2019-11-15 23:58:03,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:58:03,444 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2019-11-15 23:58:03,444 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-15 23:58:03,444 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2019-11-15 23:58:03,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-15 23:58:03,445 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:58:03,445 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:58:03,646 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2019-11-15 23:58:03,646 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:58:03,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:58:03,647 INFO L82 PathProgramCache]: Analyzing trace with hash -414082333, now seen corresponding path program 1 times [2019-11-15 23:58:03,647 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 23:58:03,647 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1121875873] [2019-11-15 23:58:03,647 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e67f05e6-976a-42f8-8dc3-6c3d54e7b264/bin/uautomizer/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2019-11-15 23:58:03,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:58:03,704 INFO L256 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-15 23:58:03,705 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:58:03,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:58:03,728 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 23:58:03,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:58:03,747 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1121875873] [2019-11-15 23:58:03,747 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:58:03,747 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-11-15 23:58:03,747 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508609890] [2019-11-15 23:58:03,748 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-15 23:58:03,748 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 23:58:03,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-15 23:58:03,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-15 23:58:03,749 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand 4 states. [2019-11-15 23:58:03,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:58:03,760 INFO L93 Difference]: Finished difference Result 38 states and 44 transitions. [2019-11-15 23:58:03,760 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-15 23:58:03,760 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2019-11-15 23:58:03,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:58:03,761 INFO L225 Difference]: With dead ends: 38 [2019-11-15 23:58:03,761 INFO L226 Difference]: Without dead ends: 28 [2019-11-15 23:58:03,762 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-15 23:58:03,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-11-15 23:58:03,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2019-11-15 23:58:03,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-15 23:58:03,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2019-11-15 23:58:03,767 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 18 [2019-11-15 23:58:03,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:58:03,767 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2019-11-15 23:58:03,767 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-15 23:58:03,767 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2019-11-15 23:58:03,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-15 23:58:03,768 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:58:03,768 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:58:03,988 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2019-11-15 23:58:03,988 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:58:03,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:58:03,989 INFO L82 PathProgramCache]: Analyzing trace with hash -356824031, now seen corresponding path program 1 times [2019-11-15 23:58:03,989 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 23:58:03,989 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [500153632] [2019-11-15 23:58:03,989 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e67f05e6-976a-42f8-8dc3-6c3d54e7b264/bin/uautomizer/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2019-11-15 23:58:04,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:58:04,064 INFO L256 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-15 23:58:04,065 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:58:04,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:58:04,106 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 23:58:04,108 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 23:58:04,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:58:04,165 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [500153632] [2019-11-15 23:58:04,166 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:58:04,166 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2019-11-15 23:58:04,166 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218181046] [2019-11-15 23:58:04,166 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-15 23:58:04,167 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 23:58:04,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-15 23:58:04,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-11-15 23:58:04,167 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand 9 states. [2019-11-15 23:58:04,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:58:04,272 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2019-11-15 23:58:04,273 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-15 23:58:04,273 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18 [2019-11-15 23:58:04,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:58:04,274 INFO L225 Difference]: With dead ends: 40 [2019-11-15 23:58:04,274 INFO L226 Difference]: Without dead ends: 37 [2019-11-15 23:58:04,274 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2019-11-15 23:58:04,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-11-15 23:58:04,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 30. [2019-11-15 23:58:04,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-11-15 23:58:04,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2019-11-15 23:58:04,279 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 18 [2019-11-15 23:58:04,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:58:04,279 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2019-11-15 23:58:04,279 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-15 23:58:04,282 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2019-11-15 23:58:04,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-15 23:58:04,283 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:58:04,283 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:58:04,499 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2019-11-15 23:58:04,499 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:58:04,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:58:04,500 INFO L82 PathProgramCache]: Analyzing trace with hash -208358251, now seen corresponding path program 1 times [2019-11-15 23:58:04,500 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 23:58:04,500 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [167047235] [2019-11-15 23:58:04,500 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e67f05e6-976a-42f8-8dc3-6c3d54e7b264/bin/uautomizer/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2019-11-15 23:58:04,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:58:04,564 INFO L256 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-15 23:58:04,566 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:58:04,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:58:04,627 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 23:58:04,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:58:04,648 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [167047235] [2019-11-15 23:58:04,648 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:58:04,648 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2019-11-15 23:58:04,649 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577084448] [2019-11-15 23:58:04,649 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-15 23:58:04,649 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 23:58:04,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-15 23:58:04,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-15 23:58:04,650 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand 5 states. [2019-11-15 23:58:04,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:58:04,699 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2019-11-15 23:58:04,703 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-15 23:58:04,703 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2019-11-15 23:58:04,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:58:04,704 INFO L225 Difference]: With dead ends: 43 [2019-11-15 23:58:04,704 INFO L226 Difference]: Without dead ends: 23 [2019-11-15 23:58:04,704 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-15 23:58:04,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-11-15 23:58:04,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-11-15 23:58:04,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-11-15 23:58:04,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 22 transitions. [2019-11-15 23:58:04,708 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 22 transitions. Word has length 19 [2019-11-15 23:58:04,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:58:04,708 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 22 transitions. [2019-11-15 23:58:04,708 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-15 23:58:04,708 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 22 transitions. [2019-11-15 23:58:04,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-15 23:58:04,709 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:58:04,709 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:58:04,910 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2019-11-15 23:58:04,910 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:58:04,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:58:04,910 INFO L82 PathProgramCache]: Analyzing trace with hash -1524231306, now seen corresponding path program 1 times [2019-11-15 23:58:04,911 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 23:58:04,911 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [636371190] [2019-11-15 23:58:04,911 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e67f05e6-976a-42f8-8dc3-6c3d54e7b264/bin/uautomizer/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2019-11-15 23:58:04,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:58:04,986 INFO L256 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 15 conjunts are in the unsatisfiable core [2019-11-15 23:58:04,988 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:58:05,051 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 23:58:05,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:58:05,079 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 23:58:05,080 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 23:58:05,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:58:05,270 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [636371190] [2019-11-15 23:58:05,271 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:58:05,271 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 16 [2019-11-15 23:58:05,271 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547694115] [2019-11-15 23:58:05,272 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-11-15 23:58:05,273 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 23:58:05,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-11-15 23:58:05,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2019-11-15 23:58:05,274 INFO L87 Difference]: Start difference. First operand 23 states and 22 transitions. Second operand 16 states. [2019-11-15 23:58:05,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:58:05,489 INFO L93 Difference]: Finished difference Result 23 states and 22 transitions. [2019-11-15 23:58:05,490 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-15 23:58:05,490 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 22 [2019-11-15 23:58:05,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:58:05,491 INFO L225 Difference]: With dead ends: 23 [2019-11-15 23:58:05,491 INFO L226 Difference]: Without dead ends: 0 [2019-11-15 23:58:05,491 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=104, Invalid=358, Unknown=0, NotChecked=0, Total=462 [2019-11-15 23:58:05,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-15 23:58:05,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-15 23:58:05,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-15 23:58:05,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-15 23:58:05,492 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2019-11-15 23:58:05,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:58:05,492 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-15 23:58:05,493 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-11-15 23:58:05,493 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-15 23:58:05,493 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-15 23:58:05,693 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2019-11-15 23:58:05,696 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-15 23:58:05,965 INFO L443 ceAbstractionStarter]: For program point L36(lines 36 39) no Hoare annotation was computed. [2019-11-15 23:58:05,965 INFO L443 ceAbstractionStarter]: For program point L36-1(lines 36 39) no Hoare annotation was computed. [2019-11-15 23:58:05,965 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-15 23:58:05,965 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-15 23:58:05,965 INFO L443 ceAbstractionStarter]: For program point L78(line 78) no Hoare annotation was computed. [2019-11-15 23:58:05,966 INFO L443 ceAbstractionStarter]: For program point L78-2(lines 78 81) no Hoare annotation was computed. [2019-11-15 23:58:05,966 INFO L439 ceAbstractionStarter]: At program point L62(lines 53 63) the Hoare annotation is: (and (= ULTIMATE.start_fmax_float_~y (_ +zero 8 24)) (= (_ +zero 8 24) (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0))) (= ULTIMATE.start_fmax_float_~x (fp.neg (_ +zero 8 24))) (= (_ +zero 8 24) ULTIMATE.start_main_~res~0) (= (_ +zero 8 24) ULTIMATE.start___fpclassify_float_~x) (= (_ +zero 8 24) |ULTIMATE.start_fmax_float_#res|) (= (_ +zero 8 24) ULTIMATE.start___signbit_float_~x) (= |ULTIMATE.start___signbit_float_#res| (_ bv0 32)) |ULTIMATE.start_main_#t~short9| (= (_ +zero 8 24) (fp ((_ extract 31 31) ULTIMATE.start___signbit_float_~w~1) ((_ extract 30 23) ULTIMATE.start___signbit_float_~w~1) ((_ extract 22 0) ULTIMATE.start___signbit_float_~w~1)))) [2019-11-15 23:58:05,966 INFO L443 ceAbstractionStarter]: For program point L79(line 79) no Hoare annotation was computed. [2019-11-15 23:58:05,966 INFO L443 ceAbstractionStarter]: For program point L30(lines 30 39) no Hoare annotation was computed. [2019-11-15 23:58:05,966 INFO L443 ceAbstractionStarter]: For program point L30-1(lines 30 39) no Hoare annotation was computed. [2019-11-15 23:58:05,966 INFO L443 ceAbstractionStarter]: For program point L22-1(lines 22 26) no Hoare annotation was computed. [2019-11-15 23:58:05,966 INFO L439 ceAbstractionStarter]: At program point L22-2(lines 22 26) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 8 24)))) (and (= ULTIMATE.start_fmax_float_~y (_ +zero 8 24)) (= ULTIMATE.start_fmax_float_~x .cse0) (= .cse0 ULTIMATE.start___fpclassify_float_~x))) [2019-11-15 23:58:05,966 INFO L443 ceAbstractionStarter]: For program point L22-3(lines 19 40) no Hoare annotation was computed. [2019-11-15 23:58:05,967 INFO L443 ceAbstractionStarter]: For program point L22-5(lines 22 26) no Hoare annotation was computed. [2019-11-15 23:58:05,967 INFO L439 ceAbstractionStarter]: At program point L22-6(lines 22 26) the Hoare annotation is: (and (= ULTIMATE.start_fmax_float_~y (_ +zero 8 24)) (= ULTIMATE.start_fmax_float_~x (fp.neg (_ +zero 8 24))) (= (_ +zero 8 24) ULTIMATE.start___fpclassify_float_~x)) [2019-11-15 23:58:05,967 INFO L443 ceAbstractionStarter]: For program point L22-7(lines 19 40) no Hoare annotation was computed. [2019-11-15 23:58:05,967 INFO L443 ceAbstractionStarter]: For program point L47(lines 47 49) no Hoare annotation was computed. [2019-11-15 23:58:05,967 INFO L439 ceAbstractionStarter]: At program point L39(lines 19 40) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 8 24)))) (and (= ULTIMATE.start_fmax_float_~y (_ +zero 8 24)) (= ULTIMATE.start_fmax_float_~x .cse0) (= .cse0 (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0))) (= .cse0 ULTIMATE.start___fpclassify_float_~x) (= (_ bv2 32) |ULTIMATE.start___fpclassify_float_#res|))) [2019-11-15 23:58:05,967 INFO L439 ceAbstractionStarter]: At program point L39-1(lines 19 40) the Hoare annotation is: (and (= ULTIMATE.start_fmax_float_~y (_ +zero 8 24)) (= (_ +zero 8 24) (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0))) (= ULTIMATE.start_fmax_float_~x (fp.neg (_ +zero 8 24))) (not (= (_ bv0 32) |ULTIMATE.start___fpclassify_float_#res|)) (= (_ +zero 8 24) ULTIMATE.start___fpclassify_float_~x)) [2019-11-15 23:58:05,967 INFO L443 ceAbstractionStarter]: For program point L56-1(lines 56 60) no Hoare annotation was computed. [2019-11-15 23:58:05,967 INFO L439 ceAbstractionStarter]: At program point L56-2(lines 56 60) the Hoare annotation is: (and (= ULTIMATE.start_fmax_float_~y (_ +zero 8 24)) (= (_ +zero 8 24) (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0))) (= ULTIMATE.start_fmax_float_~x (fp.neg (_ +zero 8 24))) (= (_ +zero 8 24) ULTIMATE.start_main_~res~0) (= (_ +zero 8 24) ULTIMATE.start___fpclassify_float_~x) (= (_ +zero 8 24) |ULTIMATE.start_fmax_float_#res|) (= (_ +zero 8 24) ULTIMATE.start___signbit_float_~x) |ULTIMATE.start_main_#t~short9|) [2019-11-15 23:58:05,968 INFO L443 ceAbstractionStarter]: For program point L56-3(lines 56 60) no Hoare annotation was computed. [2019-11-15 23:58:05,968 INFO L443 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2019-11-15 23:58:05,968 INFO L443 ceAbstractionStarter]: For program point L33(lines 33 39) no Hoare annotation was computed. [2019-11-15 23:58:05,968 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-15 23:58:05,968 INFO L443 ceAbstractionStarter]: For program point L33-1(lines 33 39) no Hoare annotation was computed. [2019-11-15 23:58:05,968 INFO L446 ceAbstractionStarter]: At program point L83(lines 65 84) the Hoare annotation is: true [2019-11-15 23:58:05,968 INFO L443 ceAbstractionStarter]: For program point L50(line 50) no Hoare annotation was computed. [2019-11-15 23:58:05,968 INFO L443 ceAbstractionStarter]: For program point L50-2(line 50) no Hoare annotation was computed. [2019-11-15 23:58:05,969 INFO L439 ceAbstractionStarter]: At program point L50-3(lines 42 51) the Hoare annotation is: (and (= ULTIMATE.start_fmax_float_~y (_ +zero 8 24)) (= (_ +zero 8 24) (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0))) (= ULTIMATE.start_fmax_float_~x (fp.neg (_ +zero 8 24))) (= (_ +zero 8 24) ULTIMATE.start___fpclassify_float_~x) (= (_ +zero 8 24) |ULTIMATE.start_fmax_float_#res|)) [2019-11-15 23:58:05,969 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 79) no Hoare annotation was computed. [2019-11-15 23:58:05,969 INFO L443 ceAbstractionStarter]: For program point L43(lines 43 45) no Hoare annotation was computed. [2019-11-15 23:58:05,986 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.11 11:58:05 BoogieIcfgContainer [2019-11-15 23:58:05,986 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-15 23:58:05,987 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-15 23:58:05,987 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-15 23:58:05,987 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-15 23:58:05,988 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:58:01" (3/4) ... [2019-11-15 23:58:05,991 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-15 23:58:06,002 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2019-11-15 23:58:06,002 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2019-11-15 23:58:06,002 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-15 23:58:06,023 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((y == ~Pluszero~LONGDOUBLE() && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && 2bv32 == \result [2019-11-15 23:58:06,023 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((y == ~Pluszero~LONGDOUBLE() && ~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~Pluszero~LONGDOUBLE() == x) && ~Pluszero~LONGDOUBLE() == \result [2019-11-15 23:58:06,024 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((y == ~Pluszero~LONGDOUBLE() && ~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~Pluszero~LONGDOUBLE() == res) && ~Pluszero~LONGDOUBLE() == x) && ~Pluszero~LONGDOUBLE() == \result) && ~Pluszero~LONGDOUBLE() == x) && aux-res == 0.0f && __signbit_float(res) == 0-aux [2019-11-15 23:58:06,024 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((y == ~Pluszero~LONGDOUBLE() && ~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && !(0bv32 == \result)) && ~Pluszero~LONGDOUBLE() == x [2019-11-15 23:58:06,024 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((y == ~Pluszero~LONGDOUBLE() && ~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~Pluszero~LONGDOUBLE() == res) && ~Pluszero~LONGDOUBLE() == x) && ~Pluszero~LONGDOUBLE() == \result) && ~Pluszero~LONGDOUBLE() == x) && \result == 0bv32) && aux-res == 0.0f && __signbit_float(res) == 0-aux) && ~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) [2019-11-15 23:58:06,056 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_e67f05e6-976a-42f8-8dc3-6c3d54e7b264/bin/uautomizer/witness.graphml [2019-11-15 23:58:06,056 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-15 23:58:06,058 INFO L168 Benchmark]: Toolchain (without parser) took 5032.95 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 166.2 MB). Free memory was 952.3 MB in the beginning and 865.0 MB in the end (delta: 87.4 MB). Peak memory consumption was 253.6 MB. Max. memory is 11.5 GB. [2019-11-15 23:58:06,058 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 977.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 23:58:06,059 INFO L168 Benchmark]: CACSL2BoogieTranslator took 358.20 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 166.2 MB). Free memory was 952.3 MB in the beginning and 1.2 GB in the end (delta: -209.2 MB). Peak memory consumption was 25.3 MB. Max. memory is 11.5 GB. [2019-11-15 23:58:06,059 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.03 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-15 23:58:06,060 INFO L168 Benchmark]: Boogie Preprocessor took 31.95 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 23:58:06,060 INFO L168 Benchmark]: RCFGBuilder took 446.01 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 26.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 11.5 GB. [2019-11-15 23:58:06,061 INFO L168 Benchmark]: TraceAbstraction took 4070.72 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 871.6 MB in the end (delta: 256.6 MB). Peak memory consumption was 256.6 MB. Max. memory is 11.5 GB. [2019-11-15 23:58:06,061 INFO L168 Benchmark]: Witness Printer took 69.38 ms. Allocated memory is still 1.2 GB. Free memory was 871.6 MB in the beginning and 865.0 MB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-15 23:58:06,063 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 977.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 358.20 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 166.2 MB). Free memory was 952.3 MB in the beginning and 1.2 GB in the end (delta: -209.2 MB). Peak memory consumption was 25.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 50.03 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 31.95 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 446.01 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 26.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4070.72 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 871.6 MB in the end (delta: 256.6 MB). Peak memory consumption was 256.6 MB. Max. memory is 11.5 GB. * Witness Printer took 69.38 ms. Allocated memory is still 1.2 GB. Free memory was 871.6 MB in the beginning and 865.0 MB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 79]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 42]: Loop Invariant Derived loop invariant: (((y == ~Pluszero~LONGDOUBLE() && ~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~Pluszero~LONGDOUBLE() == x) && ~Pluszero~LONGDOUBLE() == \result - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: (y == ~Pluszero~LONGDOUBLE() && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~Pluszero~LONGDOUBLE() == x - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: (((y == ~Pluszero~LONGDOUBLE() && ~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && !(0bv32 == \result)) && ~Pluszero~LONGDOUBLE() == x - InvariantResult [Line: 56]: Loop Invariant Derived loop invariant: ((((((y == ~Pluszero~LONGDOUBLE() && ~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~Pluszero~LONGDOUBLE() == res) && ~Pluszero~LONGDOUBLE() == x) && ~Pluszero~LONGDOUBLE() == \result) && ~Pluszero~LONGDOUBLE() == x) && aux-res == 0.0f && __signbit_float(res) == 0-aux - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: (((y == ~Pluszero~LONGDOUBLE() && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && 2bv32 == \result - InvariantResult [Line: 65]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 53]: Loop Invariant Derived loop invariant: ((((((((y == ~Pluszero~LONGDOUBLE() && ~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~Pluszero~LONGDOUBLE() == res) && ~Pluszero~LONGDOUBLE() == x) && ~Pluszero~LONGDOUBLE() == \result) && ~Pluszero~LONGDOUBLE() == x) && \result == 0bv32) && aux-res == 0.0f && __signbit_float(res) == 0-aux) && ~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: (y == ~Pluszero~LONGDOUBLE() && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 1 error locations. Result: SAFE, OverallTime: 4.0s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, HoareTripleCheckerStatistics: 234 SDtfs, 215 SDslu, 432 SDs, 0 SdLazy, 153 SolverSat, 25 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 257 GetRequests, 197 SyntacticMatches, 7 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 59 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 8 PreInvPairs, 16 NumberOfFragments, 168 HoareAnnotationTreeSize, 8 FomulaSimplifications, 42 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 4 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 128 NumberOfCodeBlocks, 128 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 240 ConstructedInterpolants, 15 QuantifiedInterpolants, 14652 SizeOfPredicates, 38 NumberOfNonLiveVariables, 383 ConjunctsInSsa, 55 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...